Just ask Jester Slave. He's always happy and willing to discuss the issue.
where is that crazy fuck anyway? I figured he'd be around trying to claim that THE sucks and not even better than Battles, or some other nonsense to try and discredit Jesper.
Anyway, the Anders/Jesper beef is fairly well documented at this point. It exploded in particular when Anders did an interview where he basically said the songwriting process hadn't been impacted by Jesper leaving and that instead of Anders/Bjorn/Jesper writing it was just Anders/Bjorn now. It was also suggested that Jesper was the cause of 'compromises' needing to be made and things were smoother without him there. Jesper was pretty offended by Anders suggesting the songwriting process was "the same, or even better" without him, and hit back by saying Anders was never a songwriter and he also came out with the infamous "polishing the turd" line in relation to Anders vocals. Jesper has had a couple of pops here and there, mainly diected at Anders, on FB before quickly deleting those comments. Bjorn and Peter have always been quick to defend Jesper and say he doesn't mean what he says.
For what it's worth Anders has always been diplomatic in regards to Jesper, but did mention in an interview in 2015 that Jesper was "in contact on and off with the other guys", suggesting Jesper wasn't contacting him at all. Who knows what their relationship is like nowadays. My guess is still fairly distant, but I don't think there's any major animosity there anymore.